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• W2067361765 abstract "A high incidence of bone disease in patients with inflammatory bowel disease (IBD) requires frequent monitoring of skeletal status and, for that reason, evaluation of radiation-free technology is an issue of interest. Our objective was to appraise the parameters of calcaneal quantitative ultrasound (QUS): broadband ultrasound attenuation (BUA), speed of sound (SOS) and stiffness index (QUI), and establish their t-score values to investigate discriminatory ability of QUS in IBD patients with metabolic bone disease. The study included 126 patients (Crohn’s disease [n = 94] and ulcerative colitis [n = 32]), and 228 age- and sex-matched healthy volunteers. Bone status was evaluated on the same day by calcaneal QUS and dual-energy x-ray absorptiometry (DXA) at spine (L1–L4) and total hip. All QUS measurements were lower in patients compared with healthy controls (BUA p < 0.001; SOS p < 0.001; QUI p < 0.001) and correlated significantly but inversely with disease duration (r = –0.3, p = 0.002). There was no difference with respect to type of disease (Crohn’s disease or ulcerative colitis) or corticosteroid therapy. All three QUS t-scores were significantly lower in patients who had previously sustained fragile fractures (n = 28) than in those without fracture in their history (n = 98) (t-scores: BUA –2.0 vs. –1.3, p = 0.008; SOS –2.1 vs. –1.4, p = 0.02: QUI –2.3 vs. –1.5, p = 0.009). Axial DXA was not significantly different between the fracture and nonfracture patients (–1.7 vs. –1.2, p = 0.1), whereas total hip DXA showed a discriminatory power between the two (–1.6 vs. –0.7, p = 0.001). Patients with t-score < –1.0 scanned by DXA were classified as bone disease. The sensitivity of QUS to identify bone disease was 93% and specificity 63%. The sensitivity of QUS to detect osteopenia was 84% and 72% for osteoporosis. Alternatively, lower negative QUS t-score cutoff ≤ –1.8 identified 83% of osteoporosis at lumbar spine and 100% at total hip. All three QUS variables had t-scores less than –1.8 when osteoporosis was detected at both spine and hip. However, the subgroup of IBD patients with QUI t-score cutoff ≤ –1.8 still included 26% of individuals with normal bone status. Calcaneal QUS measurements may identify patients with IBD who are at a higher risk of fracture independently of DXA measurements. However, QUS showed poor agreement with bone status scanned by DXA and a low discriminatory power between osteopenia and osteoporosis. (E-mail: [email protected] )" @default.
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• W2067361765 date "2007-06-01" @default.
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• W2067361765 title "Discriminatory Ability of Calcaneal Quantitative Ultrasound in the Assessment of Bone Status in Patients With Inflammatory Bowel Disease" @default.
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• W2067361765 doi "https://doi.org/10.1016/j.ultrasmedbio.2007.01.003" @default.
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